Detachable chain link



H. ST; PIERRE DETACHABLE CHAIN LINK Filed Aug. 24, 1942 in link-forming condition. as; o

Patented Aug. 14, 1945 -Other 1 objects of the invention include the' provision of a relatively easily manufactured and operable detachable ch'airr l'inkcomprising aiitotal of I only'three parts: a C-shaped main:member;

simplifi ation Au ust 22 1 .12,; r alli 1453 53 1 1 "2 Claims; (01.1" 1

h p. U53

a coupling member for closing the openside of the c-shaped member, anda special'bolt extend ing completely through the couplingandinto but not passing through the solid side ofthe c-shaped member, this bolt comprising a long plain body having at one end ajsjho'rt reduced' screw thread for cooperation 'with screw-"threads at the solid I side of the c-shaped-member, thebody being effective to resist-and'overcome any transverse or longitudinal stresses between the C-shaped member and the coupling, the screw thread connection being depended upon only for preventing edgewise disengaging movement of the coupling member.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawing in which:

Fig. 1 is a plan view of the new detachable link with part in section, and showing the link connected with the next adjacent links in the chain;

Fig. 2 is an edge view of the detachable link and shows the connected links, the coupling member beingremoved;

Fig. 3 is a view in elevation of the coupling member looking in the direction of arrow 3 in Fig. 1;

Fig. 4 is a view in elevation of the coupling member looking in the direction of arrow 4 in Fig. 5;

Fig. 5 is a view in end elevation of the coupling member, and

Fig. 6 is a plan view of the C-shaped link member.

The main link part is indicated in the drawing at I0 and comprises a forged C-shaped member of, for instance, steel or an alloy, and this 6- shaped member is provided at its ends with shoulders I2 formed by reduced recesses or necks I4.

Shoulders I are elongated zinnthe, plane of the link 1 and l thus. have La, lengthciinn the link; plane longer ithanotheir heightsswhich may besaid to bethe-J zdi-mensio'n sin ia plane. normal-z to lthe ilink 1 planes fI'heouterlendsoflshouldersclz-stop shortof the outer; aspect ofiithe 2 link as for2 a-instance as indicated at IIS in Figrimmbutaitheyl extend inwardlyfito the surfacesio iGYBSl-Of: the..-link l?as I indicated at. l81in Figa.;6. qThusiitwill be:seen

that "shoulders I 2; although; icomp'aratively- .nar-- row; are of suflicient sectio to belstrong enough for? chainsof thisztype. M i: a It is contemplated. cthatthe resent :link may be Fo'fthe centralYstud type'iafnd in this event a boss 2(his provided at lthe s'olidiside ofr-lc-shaped member I llgzthis boss' extending towards the open side .of member andvbeing located: substantially centrally of shoulders-125 A depression 22 may be I formed I in i the" bosssforla' purpose to be describedw The adjac 24 and itwilLbe seen that these links are easily insertible in the eyes 0f the c=s1iaped member I 0 chi; links rare indicated generallyl. at

by entering them' therein' i through the open i'side of member ID. I

To close the open side of the C-shaped member to complete the detachable link, I have provided a generally T-shaped closing or coupling member. This coupling member comprises a generally barrel-shaped head 26 which is formed at each end to mate with and in effect continue the ends 28 of C-shapedmember ID, these ends having,

flat surfaces for the close-reception therebetween of the flat ends 30 of head 26. The leg of the T-shaped coupling member is formed by a Y rounded boss 32 extending centrally of the coupling member head 26, and a rounded projection 34 is provided at the free end of boss 32 for entry into the depression 22.

The free ends of head 26 of the T-shaped conpling member are extended from the sides of boss 32 past the center of head 26, and are formed with undercut or T-shaped slots 38 which are head 44 of a bolt. This bolt has a plain integral body 44' which extends from the head of the bolt almost to the other end thereof and this body will be located in a'tightly fitting circular recess 45 in boss 20 extending inwardly from the bottom of depression 22. In extension of the plain body the bolt is provided with a reduced threaded portion 46 which is adapted to be threaded into a reduced tapped hole in the C- shaped member as clearly shown in Fig. 1. There is an undercut iormed in the head 26 of the T- shaped coupling member at the bore for the purpose of receiving a lead plug 48 to seal up the head 44 ofgtha In orderetoiihserti tlie detachableliilklin .a chain it is necessary only to place the adjacent links 24 in the eyes of the detachable link by entering them between the shoulders l2 .at the open side of C-shaped member Ill. The T-shaped coupling' is then merely slid into place as aboye deserihed with projection 34 entered into depression 22.

The bolt is then thrust througli its bore -in the 1F T-shaped coupling member and turned uputightly by means of threads 48; The head of "the b6152 to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. A detachable chain link comprising a main C-shaped link member having a pair of opposed free ends, said ends being spaced to define an opening therebetween, connection shoulders at said ends, a boss at the side of said link member opposite the opening and extending towards the latter, a depression in said boss, a single unitary ODLIQHIIQ JIIfiHIbGPQOf general; IR-shape for closing tileabpenirigithetlhead ofl tli i. bein adapted to fit between said link-member free ends, slots in said head for receiving said shoulders in interplaced: cm the: screw threadsilfig, and the: only functionkomthese iserewuthreads r-willnber to prevent withdrawals of: the jcouplinga membervrromlxthe C:;-shap'edimembexriman:edgewisesdiractionashoul ders l2 in cooperation with slots 38'preyentin anygfmovementtfofii'the coupling r la ve: o: t GEshaned: memben-in allaother. directions; s 1 1; L Havin thusgedescribed any; inventiom andn the advantages-i thereof; :1; doi :notwish; to; be; limited V engagingrelation by a sliding motion in one relar5 ,th e= T -and .ex tending through the leg of the T,

tive direeti'on only, a bore through the head of the free end' ofthe leg fitting said depression, a bolii extending tlirough said bore and into said boss,,,a bore in said boss and a tapped hole at the bottom of the last-named bore, said bolt extehding'ointoz andii'fittingstherlatter: and having a screw threaded portiomtolbe -threadedvinto said" tappodqhole: said: 11011736105315! fittmg; the: last named bcresatritaunthreadedapontion;

213A; detachablezchaimlinkij comprising; a: mermbenvhavingiian' opemsidegw shoulder; ataieacht end ofi'the member alts-said 30116.11 v side ,2 said: shoulders heingi elongatedi im the planerv ofithelink-; i a-bore in sdid members" opposite; the opens sider a, one piece couplings-for closing said openi side; said coupling having an element?extending- .aoross the link toiform ai'f-swdflllndfircubiSIOtSnfihwSEtid?001.1- pling; tor-receive: said; sh0u1derS',-l at bore-' ally the waygthronghithepoounlingiandelement;said: bores beineealigned,and cfrsubst ntiaily he .same diameter, aaheaded heltihav ne amain bodmextendingzslmtoibothrbores, screw threads at'tho end: of the b ltiopn sitez its -h'eada and: a; tapp d l abet-he; bottom-(0f the,- first namedfbore for I coop eraticngtherewith, saidth-reads -being the: sole securin meansslfonth i memberand. p said threads and-i-tappedq hole being, reduced: in diamBtenreIati e tothebodye. by

- a SEE}. BIERRE: 

